[Tallahassee-pm] Things I did a bad job of explaining in the meeting last night:

[Tillman, James]

I'm really glad you were able to come, Phillip.  I also had a great time,
and enjoyed the conversations.  Since I also promised something -- here's
the link to the DBSchema project:
 
http://dbschema.sf.net/ <http://dbschema.sf.net/> 
 
You'll probably learn more about the project at this point by browsing the
CVS repository, especially the DBSchema subdirectory:
http://cvs.sourceforge.net/cgi-bin/viewcvs.cgi/dbschema/
<http://cvs.sourceforge.net/cgi-bin/viewcvs.cgi/dbschema/> 
 
I noticed some files are missing from the repository that might help with
understanding things a little (test files and examples).  I'll see if I can
track those down.  However, the SQLServer.pm file has a good example of how
the drivers were meant to work.  You'll see the methods they are meant to
implement and the objects they are supposed to create if you check the
source code.
 
Later on, I'll send a list of tasks for us to take on.
 
jpt
 
 
-----Original Message-----
From: Phillip Tyre [mailto:phillip.tyre at fcul.com]
Sent: Friday, June 13, 2003 11:07 AM
To: tallahassee-pm at mail.pm.org
Subject: [Tallahassee-pm] Things I did a bad job of explaining in the
meeting last night:


Wanted to say that I had a great time last night, and it was good to finally
link some names to faces. The discussions were all over the place giving us
a veritable smorgasbord of topics to digest.
 
I've included some links about a few things I promised to mail the list
about. I opened my mouth about Hyper Threading, and then realized I really
didn't fully understand the subject. No one else seems to have heard of it,
so here it is. I actually didn't realize RH9 supported it, so now I have to
figure out how to get one of my new P4ht boxes going with it.  
 
 
Subject 1: Hyper Threading
The bunk from Intel
List of supported OS's http://www.intel.com/support/platform/ht/os.htm
<http://www.intel.com/support/platform/ht/os.htm> 
Summary: You need one of the following OS's
Red Hat Linux* 9 (Professional and Personal versions) 
SuSE Linux* 8.2 (Professional and Personal versions) 
Red Flag Linux* Desktop 4.0
Microsoft* Windows* XP Professional Edition 
Microsoft* Windows* XP Home Edition 
http://www.intel.com/homepage/land/hyperthreading_more.htm
<http://www.intel.com/homepage/land/hyperthreading_more.htm> 
Summary: You need the following hardware:
An Intel® Pentium® 4 processor supporting HT Technology 
An Intel® chipset that supports HT Technology 
System BIOS supporting HT Technology and has it enabled 
http://www.intel.com/eBusiness/products/server/processor/xeon/wp020901_sum.h
tm?iid=Homepage+htland_ebizxeon
<http://www.intel.com/eBusiness/products/server/processor/xeon/wp020901_sum.
htm?iid=Homepage+htland_ebizxeon&> &
Summary: How it works:
Hyper-Threading Technology allows multi-threaded server software
applications to execute threads in parallel within each processor in a
server platform.
Hyper-Threading technology enables this thread-level parallelism (TLP) by
duplicating the architectural state on each processor, while sharing one set
of processor execution resources. When scheduling threads, the operating
system treats the two distinct architectural states as separate "logical"
processors. This allows multi-processor capable software to run unmodified
on twice as many logical processors. While Hyper-Threading technology will
not provide the level of performance scaling achieved by adding a second
processor, benchmark tests show some server applications can experience 30
percent gain in performance.
http://www.intel.com/eBusiness/pdf/prod/server/xeon/wp020901.pdf
<http://www.intel.com/eBusiness/pdf/prod/server/xeon/wp020901.pdf> 
Summary: It's complicated. It's not exactly like I described it, on closer
reading, but it's sorta...
 
Some comments from people besides Intel:
http://arstechnica.com/paedia/h/hyperthreading/hyperthreading-1.html
<http://arstechnica.com/paedia/h/hyperthreading/hyperthreading-1.html> 
http://www.gamepc.com/labs/view_content.asp?id=ppso
<http://www.gamepc.com/labs/view_content.asp?id=ppso&page=3> &page=3
 
 
 
Subject 2: Virtual Databases
http://www.baselinemag.com/article2/0,3959,1111900,00.asp
<http://www.baselinemag.com/article2/0,3959,1111900,00.asp> 
This is the actual article that crossed my desk the other day. Explains why
I read it in like 15 secs, and why most of it didn't stick. But here it is,
as promised.
 
 
Phillip
 
            
 
 
 
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